When did Horizon Season 11 Episode 16 air?
Horizon Season 11 Episode 16 aired on June 10, 1974.
Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 11 · Episode 16
The Secrets of Sleep
Jun 10, 1974·1h
Horizon investigates the subject of sleep in Britain and the USA.
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Direct answers for episode-level questions and details.
How long is Horizon Season 11 Episode 16?
This episode runs for approximately 60 minutes.
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